CFRP Saw Blade

Abstract

During manufacture of a saw blade ( 1 ), especially a circular saw blade ( 2 ) or a saw band ( 14 ), the size of a deepening ( 8 ) in a tooth supporting body ( 3 ) of the saw blade ( 1 ) is reduced. The tooth supporting body ( 3 ) is then connected to a basic body ( 10 ) made of a fiber reinforced material to form the base body ( 12 ) of the saw blade ( 1 ) such that the deepening ( 8 ) is closed and the tooth supporting body ( 3 ) subjects the basic body ( 10 ) to tension when the tooth supporting body ( 3 ) and the basic body ( 10 ) have the same temperature.

I claim: 
     
         1 . A method of producing a saw blade, the saw blade including a base body and a plurality of teeth, the base body including a tooth supporting body and a basic body, the teeth being arranged at the tooth supporting body, the tooth supporting body including a deepening having a size, the basic body being made of a fiber reinforced material, said method comprising the steps of:
 reducing the size of the deepening of the tooth supporting body; and   connecting the tooth supporting body to the basic body to form the base body such that the deepening is closed and the tooth supporting body subjects the basic body to tension when the tooth supporting body and the basic body have the same temperature.   
     
     
         2 . The method of  claim 1 , wherein the size of the deepening is reduced by selective heat treatment for obtaining a temperature difference between the basic body and the tooth supporting body. 
     
     
         3 . The method of  claim 1 , wherein the tooth supporting body is cold-stretched. 
     
     
         4 . The method of  claim 2 , wherein the tooth supporting body is cold-stretched. 
     
     
         5 . The method of  claim 4 , wherein the tooth supporting body is cooled to reach a temperature of less than −5° C. 
     
     
         6 . The method of  claim 4 , wherein the tooth supporting body is cooled to reach a temperature of between approximately −10 and −20° C. 
     
     
         7 . The method of  claim 1 , wherein the size of the deepening is reduced by a pressurization of the tooth supporting body. 
     
     
         8 . The method of  claim 7 , wherein the tooth supporting body is upset by between approximately 0.01 and 0.05 mm. 
     
     
         9 . The method of  claim 1 , wherein the fiber reinforced material includes reinforcing fibers and a matrix material, the fibers being arranged in the matrix material as a tow such that a quasi isotropic fabric is formed. 
     
     
         10 . The method of  claim 9 , wherein
 the tooth supporting body includes a connecting element including a plurality of recesses; and   the basic body includes a plurality of tows of the fiber reinforced material, the tows being connected to the tooth supporting body such that the connecting element of the tooth supporting body is arranged between a plurality of these tows and the tows are connected to one another via the recesses.   
     
     
         11 . The method of  claim 10 , wherein
 the reinforced fibers are selected from the group consisting of metal fibers, carbon fibers and plastic fibers; and   the matrix material includes a material selected from the group consisting of plastic, ceramic and metal.   
     
     
         12 . The method of  claim 1 , wherein the deepening is a through hole. 
     
     
         13 . The method of  claim 1 , wherein the tooth supporting body is made of metal. 
     
     
         14 . The method  claim 1 , wherein
 the saw blade is designed as a circular saw blade;   the tooth supporting body is designed as a ring;   the diameter of the ring is reduced; and   the ring subjects the basic body to tension in a radial direction.   
     
     
         15 . The method of  claim 1 , wherein
 the saw blade is designed as a saw band; and   the tooth supporting body is designed to be elongated.   
     
     
         16 . A saw blade, comprising:
 a base body, the base body including a tooth supporting body and a basic body,
 the tooth supporting body including a deepening having a size, 
 the basic body being made of a fiber reinforced material, 
 the basic body being connected to the tooth supporting body by a process which has reduced the size of the deepening of the tooth supporting body to form the base body of the saw blade such that the deepening is closed and the tooth supporting body subjects the basic body to tension when the tooth supporting body and the basic body have the same temperature; and 
   a plurality of teeth, the teeth being arranged at the tooth supporting body.   
     
     
         17 . The saw blade of  claim 16 , wherein the tooth supporting body includes a plurality of deepenings and a plurality of spokes, the spokes being made of metal and being arranged between the deepenings, each deepening being closed by the fiber reinforced material. 
     
     
         18 . The saw blade of  claim 16 , wherein the deepening is a through hole. 
     
     
         19 . The saw blade of  claim 16 , wherein
 the saw blade is designed as a saw band; and   the tooth supporting body is designed to be elongated.   
     
     
         20 . The saw blade of  claim 16 , wherein the fiber reinforced material includes reinforcing fibers and a matrix material, the fibers being arranged in the matrix material as a tow such that a quasi isotropic fabric is formed. 
     
     
         21 . The saw blade of  claim 20 , wherein
 the tooth supporting body includes a connecting element including a plurality of recesses; and   the basic body includes a plurality of tows of the fiber reinforced material, the tows being connected to the tooth supporting body such that the connecting element of the tooth supporting body is arranged between a plurality of these tows and the tows are connected to one another via the recesses.   
     
     
         22 . The saw blade of  claim 21 , wherein
 the reinforced fibers are selected from the group consisting of metal fibers, carbon fibers and plastic fibers; and   the matrix material includes a material selected from the group consisting of plastic, ceramic and metal.   
     
     
         23 . A saw band, comprising:
 an elongated tooth supporting body, the tooth supporting body including a through hole;   a plurality of teeth, the teeth being arranged at the tooth supporting body; and   a basic body, the basic body being made of a fiber reinforced material and being connected to the tooth supporting body such that the through hole is closed and a base body is formed.   
     
     
         24 . The saw band of  claim 23 , wherein the fiber reinforced material includes reinforcing fibers and a matrix material, the fibers being arranged in the matrix material as a tow such that a quasi isotropic fabric is formed. 
     
     
         25 . The saw band of  claim 24 , wherein
 the tooth supporting body includes a connecting element including a plurality of recesses; and   the basic body includes a plurality of tows of the fiber reinforced material, the tows being connected to the tooth supporting body such that the connecting element of the tooth supporting body is arranged between a plurality of these tows and the tows are connected to one another via the recesses.   
     
     
         26 . The saw band of  claim 25 , wherein
 the reinforced fibers are selected from the group consisting of metal fibers, carbon fibers and plastic fibers; and   the matrix material includes a material selected from the group consisting of plastic, ceramic and metal.   
     
     
         27 . A band saw machine, comprising:
 a saw band, including:
 an elongated tooth supporting body, the tooth supporting body including a through hole, 
 a plurality of teeth, the teeth being arranged at the tooth supporting body, and 
 a basic body, the basic body being made of a fiber reinforced material and being connected to the tooth supporting body such that the through hole is closed and a base body is formed; and 
   two wheels,
 the wheels being arranged at a distance with respect to one another, 
 the wheels being designed and arranged to guide and to rotatingly drive the saw band, 
 the distance between the wheels being designed to be adjustable such that the tooth supporting body subjects the basic body to tension when the tooth supporting body and the basic body of the saw band have the same temperature. 
   
     
     
         28 . The band saw machine of  claim 27 , wherein the fiber reinforced material includes reinforcing fibers and a matrix material, the fibers being arranged in the matrix material as a tow such that a quasi isotropic fabric is formed. 
     
     
         29 . The band saw machine of  claim 28 , wherein
 the tooth supporting body includes a connecting element including a plurality of recesses; and   the basic body includes a plurality of tows of the fiber reinforced material, the tows being connected to the tooth supporting body such that the connecting element of the tooth supporting body is arranged between a plurality of these tows and the tows are connected to one another via the recesses.   
     
     
         30 . The band saw machine of  claim 29 , wherein
 the reinforced fibers are selected from the group consisting of metal fibers, carbon fibers and plastic fibers; and   the matrix material includes a material selected from the group consisting of plastic, ceramic and metal.